Win32API ディスク空き容量を求める GetDiskFreeSpace

使用するAPI

GetDiskFreeSpace

#include <windows.h>

int
main()
{
	DWORD dwSectorsPerCluster;
	DWORD dwBytesPerSector;
	DWORD dwNumberOfFreeClusters;
	DWORD dwTotalNumberOfClusters;
	BOOL bRet;

	bRet = GetDiskFreeSpace("C:\\",
		&dwSectorsPerCluster,
		&dwBytesPerSector,
		&dwNumberOfFreeClusters,
		&dwTotalNumberOfClusters);

	if (!bRet) {
		return 1;
	}

	printf("SectorsPerCluster = %u\n", 
		dwSectorsPerCluster);
	
	printf("BytesPerSector = %u\n", 
		dwBytesPerSector);
	
	printf("NumberOfFreeClusters = %u\n", 
		dwNumberOfFreeClusters);
	
	printf("TotalNumberOfClusters = %u\n", 
		dwTotalNumberOfClusters);

	return 0;
}